In 2.7.x, this outputs two DIV sections, each containing the appropriate image and corresponding caption.

Under 2.8.x, the first DIV section (containing Img_001) is output properly, but the entire caption block for the section caption (with Img_002) is output as plaintext in the post (including the literal text "[caption]") and no fancy DIV is output for this section.

This issue seemingly corrects itself if one inserts a space between the first "/caption" closing tag and the subsequent "caption" opening tag.

(Please excuse the lack of wordwrap in this issue--I couldn't figure out how to keep Trac from mangling the excerpt above without sticking it in a code block, but then everything else in the post gets un-wordwrapped.)